Causes: man-made industrial chemicals
(Image: Nicholas Hippert)
Man-made industrial chemicals
- Sulphur hexafluoride (SF6), has a global warming potential (GWP) 22,200 times that of CO2, and it’s increasing (Fig. 1).
- CFCs, HCFCs, HFCs, PFCs and others (Fig. 2) are man-made chemicals with a global warming potential many thousands of times that of CO2. Some contribute to the loss of the ozone layer. CFCs have been linked to why the Arctic and Antarctic regions are warming faster than anywhere else on Earth.
- Collectively, they contribute 2.4% to NZ’s emissions.
Global Warming Potential (GWP):
Is the heat absorbed by any greenhouse gas in the atmosphere, as a multiple of the heat that would be absorbed by the same mass of carbon dioxide (CO2). This is sometimes written as eCO2 or e-CO2.
References and further reading
- Ministry for the Environment: New Zealand’s Greenhouse Gas Inventory 1990–2017 Vol 1; Chapters 1-15
- Ministry for the Environment: New Zealand’s Greenhouse Gas Inventory 1990–2017: graphic
- Ministry for the Environment: 2019 Measuring Emissions: A Guide for Organisations
- Ministry for the Environment: 2019 Measuring Emissions: A Guide for Organisations. 2019 Summary of Emission Factors
- Ministry for the Environment: New Zealand’s Greenhouse Gas Inventory
- NOAA: Global Monitoring Laboratory Earth System Research Laboratories
- 2019 IPCC: Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories
- 2018 IPCC: Chapter 4, Atmospheric Chemistry and Greenhouse Gases
- 2013 IPPC: Chapter 8: Anthropogenic and Natural Radiative Forcing in: Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change